I can get a Willys pickup for dirt cheap. Thought about taking all the running gear out of the 89 and putting it in the Willys. But did some searching, and I think with full width axles and 40" boggers would put the tires clear past the body. I can't find any "hardcore" trucks out there done with full width, tires,etc. Can't even find what the stock WMS on the stupid things.
but if you were concerned with fender coverage i think a waggy front axle would fit nicely. you can get one at picknpull for about 130.oo bucks .